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1. Gather all the materials needed and put them on the table. 2.Hammerb each of the materials. 3. Observe the changes and record all your observetions. Material Observation before hammering after hammering empty can piece of chalk galvanized iron​

1 Gather All The Materials Needed And Put Them On The Table 2Hammerb Each Of The Materials 3 Observe The Changes And Record All Your Observetions Material Obser class=